Not to be a bummer, but being realistic since I am currently managing a auto total loss unit at USAA. Make sure your insurance will cover what ever aftermarket parts you put on the car. I always tell people, putting a $5000 stereo in a $1000 dollar car does not make the car worth $6000. It affects the value, but only in what the part effects the overall value of the vehicle. So you might spend $1600 on cool rims and they might add $100 to the overall value of the vehicle if it were a total loss. Remember you are paying premiums on a standard vehicle. Not being a downer, just being realistic.

Take some dated photos and keep all receipts and boxes, manuals, etc separate from the car in case it it stolen. It is also not a bad idea to hold onto the old stock rims/tires so you can swap them out if needed after something happens.

I saw photos of a cool looking flip up 10 inch monitor/stereo/gps unit put into a car (after it had been stolen :()... that would be cool to add.